First off, every antichrist should have come to terms with thousands of lives, estabilishing covenants, then set himself up in God's temple after breaking into that place out of reach, and take it over.
From there on, the Bible constrained the fact that during the final days 'he who has set himself' comes along with a false prophet and a handful of deceitful Christs-

The Demon is an Angel . So sad and funny